/*
 * Copyright (c) 2010, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "alkes/tree3d/Screen3D.h"
#include "alkes/tree3d/Layer3D.h"

namespace alkes {

Screen3D::Screen3D(IGraphics3D* graphics)
: default_context_(graphics, graphics->createDefaultRenderTarget3D())
{
}

Screen3D::~Screen3D()
{
}

Layer3D* Screen3D::registerLayer3D()
{
    Layer3D* layer = new Layer3D(&default_context_);

    if (registerLayer(layer))
    {
        addLayer(layer);
    }
    else
    {
        delete layer;
        layer = 0;
    }

    return layer;
}

Context* Screen3D::getContext()
{
    return &default_context_;
}

void Screen3D::onEraseBackground(const Rect* dirty_rects, int16_t dirty_count, const Color& color)
{
    GraphicsContext3D* gc = static_cast<GraphicsContext3D*>(default_context_.getGraphicsContext());
    if (!gc)
        return ;

    IRenderTarget3D* target = gc->getRenderTarget3D();
    if (!target)
        return ;

    int16_t i;
    target->beginDraw3D();

    for (i = 0; i < dirty_count; ++i)
    {
        target->clearBuffer(
            AL_BUFFER_COLOR|AL_BUFFER_DEPTH,
            color,
            dirty_rects + i,
            -1.0f);
    }

    target->endDraw3D();

}

}
